10121013221 has 8 divisors (see below), whose sum is σ = 11310401088. Its totient is φ = 8976508000.

The previous prime is 10121013193. The next prime is 10121013247. The reversal of 10121013221 is 12231012101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10121013221 - 2²² = 10116818917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121013196 and 10121013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121013421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11220185 + ... + 11221086.

It is an arithmetic number, because the mean of its divisors is an integer number (1413800136).

Almost surely, 2^10121013221 is an apocalyptic number.

10121013221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10121013221 is a deficient number, since it is larger than the sum of its proper divisors (1189387867).

10121013221 is a wasteful number, since it uses less digits than its factorization.

10121013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22441323.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10121013221 its reverse (12231012101), we get a palindrome (22352025322).

The spelling of 10121013221 in words is "ten billion, one hundred twenty-one million, thirteen thousand, two hundred twenty-one".